Pradana, F.G.A. 2019. Analisis Validasi Pengembangan Moderen Pada Siswa Tunagrahita di SLB Siswa Budhi, Surabaya. JOSSAE (Journal of Sport Science and Education). 3, 2 (Apr. 2019), 98–102. DOI:https://doi.org/10.26740/jossae.v3n2.p98-102.